Exam 13: Characterizing and Classifying Viruses, Viroids, and Prions

One mechanism by which viruses may cause cancer is to interrupt the genetic regulatory sequences of repressor proteins.Which of the following types of viruses is most likely to be involved in causing cancer by this mechanism?

The combination of a virus's protein coat and nucleic acid core is called the (capsid/virion/nucleocapsid).

Which of the following types of animal virus requires RNA-dependent RNA transcriptase to be replicated?

The process in which viral capsids are removed within the infected cell is called (entry/disassembly/uncoating).

Prions are composed of a single protein called (plaque/BSE/PrP).

A cell is infected with a virus carrying an oncogene sequence in its genome.What process may occur if the oncogene is expressed in the infected cell?

Some viruses have a dsDNA genome.Others may have a ________ genome.

Virus replication results in the death of the cell in ________ infection(s).

Which of the following membranes can give rise to a viral envelope?

Disadvantages of continuous cell cultures include

Members of a virus family have the same type of nucleic acid.

Which of the following lists stages of a lytic replication cycle in order,from earliest to latest stages? I.Synthesis II.Assembly III.Attachment IV.Release V.Entry

A(n)________ is a virus that infects bacterial cells.

Seven (orders/families/classes)represent the highest level of taxonomic rank used in classifying viruses.

An animal virus that does not have an envelope is described as a(n)(naked/unenveloped/capsid)virion.